Anthropic says new measures like preserved thinking in Fable 5.1 and Opus 5.5 have reduced data harvesting through distillation attacks by about 90% to 99% (Anthropic)

Anthropic: Anthropic says new measures like preserved thinking in Fable 5.1 and Opus 5.5 have reduced data harvesting through distillation attacks by about 90% to 99% — In recent months, we've made substantial progress on reducing the effectiveness of distillation attacks on Claude using new methods, as we outline in this blog.

Also reported by The Economic Times, Reuters, The Straits Times, Deccan Chronicle and 1 more.

First reported by Techmeme. This page is a short excerpt; the full text is theirs.